Ah-tty is an automatic helper for command prompts and shells. It is primarily for novice shell users who would like (or need) feedback and advice about the command they are trying to use or want to use.

abcde is a frontend to cdparanoia, wget, cd-discid, id3, and your favorite Ogg Vorbis (the default), MP3, FLAC, Ogg Speex, or MPP (Musepack) encoder. It grabs an entire CD and converts each track to the desired format, then comments or ID3-tags each file, all with one command. It supports multiple output in a single CD read, the creation of a single track from a CD, resume operation, CD concatenation, volume normalization, gapless encoding (with LAME), parallelization, SMP, proxies, customizable filename organization and munging, playlist generation, distributed encoding via distmp3, and more.

AMaViS (A Mail Virus Scanner) scans e-mail
attachments for viruses using third-party virus
scanners available for UNIX environments. It
resides on a UNIX (Linux) machine and looks
through the attached files arriving via e-mail,
generates reports when a virus is found and sets
the delivery on hold.

amx takes a mailbox file and removes any messages which were received more than a given number of days ago. It also makes other configurable checks on the headers so you can ensure that unread messages or ones flagged as important can be kept.

Apache Toolbox provides a means to easily compile
Apache (IPv4/6) SSL, PHP(v3/v4), MySQL, Jakarta, a
large number of modules (61 3rd party modules and
36 default Apache modules, static or as DSOs), and
GD libraries with PNG+JPEG+Freetype2+zlib support.
It is fully customizable and menu-driven.
Everything is compiled from source, and wget is
used to download any missing modules. It can also
check for RPMs that might cause problems and
create an RPM with your selections.

AutoGen is a tool designed for generating program
files that contain repetitive text with varied
substitutions. Its goal is to simplify the
maintenance of programs that contain large amounts
of repetitious text. This is especially valuable
if there are several blocks of such text that must
be kept synchronized. Output is specified with a
Scheme-enhanced output template. Input, if
required by your template, may come from AutoGen
definitions, CGI data, or XML files.

autolame automatically encodes your .wav files. Just put them in the "in" directory, wait a bit, and you'll find your .mp3 files in the "out" directory. No further user interaction is required. An external encoder program is needed.

AutoOpts is an integrated part of AutoGen. Based on a very simple option description file, it will process configuration files, environment variables, command line options, text strings passed by client programs, and will make the results easily accessible to the client program. It will also produce a man page and the info-doc invoking section automatically.